Patents by Inventor Manfred Bleichwehl

Manfred Bleichwehl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7079663
    Abstract: A microphone comprising a diaphragm which has a front diaphragm surface on which sound waves impinge and a rear diaphragm surface which is at least partially acoustically separated from the front diaphragm surface, and a sound inlet, through which sound waves can go to the rear diaphragm surface. In order to improve a strongly frequency-dependent frequency response characteristic in respect of the directional effect of the microphone, the microphone includes at least one damping element and the slot-shaped sound inlet forms substantially an acoustic inductance so that at least a part of the sound waves to be picked up is passed with a delay to the rear diaphragm surface.
    Type: Grant
    Filed: October 16, 1999
    Date of Patent: July 18, 2006
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventors: Heinz Epping, Manfred Bleichwehl, Artur Seehafer